Two teenagers have been jailed over the fatal stabbing of a youth worker who confronted a group of drug dealers outside his home.

Omid Saidy was knifed in the neck after he chased two teenagers from outside his house near Parsons Green.

The 20-year-old had gone after the suspected dealers with his friend Oluwafemi Omotosho, known as Femi, who came off his moped and was stabbed in the chest as he lay on the ground.

Mr Saidy's 17-year-old killer, who cannot be named because of his age, was sentenced to eight years' detention for manslaughter at the Old Bailey on Friday.

Giving evidence, the youth admitted drug dealing in the area but told jurors Mr Saidy had a knife and he stabbed him in self-defence.

Shafiq Smith, 19, of Laitwood Road in Wandsworth was jailed for six years and one month for wounding Mr Omotosho with intent and possession of a knife.

Mr Saidy's mother Virginia Jerome told the court about the impact of the "cruel and senseless" killing of her son.

She said: "October 16, 2017 was the day my nightmare began but it was not a nightmare, it was real."

Ms Jerome said her son was the "brightest of stars" who brought love and laughter to everyone around him.

The family spent his 21st birthday "weeping for him", she said.

His father said "London is fed up" with knife crime, and called for stiffer punishments.

Prosecutor Timothy Cray previously said the victim was "angry that people were dealing drugs near (his) address".

He said the group had been asked to move on earlier on October 16 last year but returned that evening with their faces masked or wearing hoods.

Smith was stopped in Mitcham just four days before the killing and found to have a 30cm knife tucked in his trousers.

He was on bail at the time of the offence.

The 17-year-old, of Shildon in Durham, had four knife-related convictions. Previously, he had been convicted of possessing a knife and offensive weapon in public and a robbery involving threats with a machete.

He had been handed a supervision and training order before the killing.